CN105033219A - Injection pressure-boosting and speed-increasing structure of die casting machine - Google Patents
Injection pressure-boosting and speed-increasing structure of die casting machine Download PDFInfo
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- CN105033219A CN105033219A CN201510274378.5A CN201510274378A CN105033219A CN 105033219 A CN105033219 A CN 105033219A CN 201510274378 A CN201510274378 A CN 201510274378A CN 105033219 A CN105033219 A CN 105033219A
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Abstract
The invention discloses an injection pressure-boosting and speed-increasing structure of a die casting machine. The injection pressure-boosting and speed-increasing structure comprises an injection punch, wherein an injection part is arranged at one side of the injection punch; an injection oil cylinder, an injection piston rod and a pressure-boosting oil cylinder are sequentially arranged at the other side of the injection punch; a pressure-boosting cavity is formed between the injection piston rod and the pressure-boosting oil cylinder; and a primarily quick oil path block assembly and a secondarily quick oil path block assembly are arranged on the pressure-boosting oil cylinder. According to the injection pressure-boosting and speed-increasing structure, the speed of the primarily quick action and the secondarily quick action is increased by a design method and a control mode which are combined with a practical production process, so that requirements of producing thin-wall parts such as a magnesium alloy mobile phone middle plate and the like are met, and a common horizontal type cold chamber die casting machine is transformed into a special die casting machine for thin-wall parts represented by the die-cast magnesium alloy mobile phone middle plate; the modified die casting machine can realize that cast pieces are full, less in shrinkage cavities, smooth in surface, good in smoothness, free of flow marks, less in flanges, free of air bubbles and flaws and high in practicability, and meet processing requirements.
Description
Technical field
The present invention relates to a kind of die casting machine, specifically a kind of injection supercharging acceleration structure of die casting machine.
Background technology
Die casting is the abbreviation of compression casting, its essence is under the effect of high pressure, by the metal of liquid or semi liquid state with higher speed filling die-casting die die cavity, and solidifies under pressure and obtains the method for foundry goods.
Die casting is one of state-of-the-art metal forming process, is to realize few chip, and the effective way of chipless, is widely used, and develops very fast.Extrusion process is not only applicable to non-ferrous metal as zinc, aluminium, magnesium and copper, and be used for die casting cast iron and steel-casting, casting dimension can from several millimeters to 1-2 rice, weight can from several grams to tens of kilograms, die casting is also no longer confined to auto industry and measurement instrument industry, progressively expand other each industrial department to, as agricultural machinery, machine tool industry, electronics industry, national defense industry, computer, medicine equipment, electronic product, tens industries such as clock and watch and haberdashery and hardware, evacuated die-casting process has been there is again in die-casting technique, oxygenation die casting, the new technologies such as the application of microdiecast and soluble core.
At present, countries in the world are very good to the application prospect of magnesium alloy die casting, particularly at automobile, aviation, telecommunications, communications and transportation and machinery industry, adopt Mg alloy castings replacement aluminium alloy or iron and steel parts effectively can alleviate machinery weight, thus save energy consumption significantly, reduce environmental pollution.If as automobile often alleviates 100KG, then every kilometric fuel consumption per can reduce 0.4L, so U.S., day, Ou Deng developed country start the application expanding Mg alloy castings on automobile now, as engine cylinder-body, gear-box, crankcase, enter steam discharge liquid pipe, wheel hub, chassis etc., make Mg alloy castings with the speed increment of annual 20%-30%, wherein 80% is die casting.Magnesium alloy die casting at the same expanding day of application of the industries such as household electrical appliances light industry and haberdashery and hardware, as mobile phone, notebook computer, panel computer, electric tool, camera, upholstery, hay mover etc.These magnesium alloy die castings not only weight alleviate greatly, and size is precise and stable, and any surface finish, have a series of outstanding advantage.
Therefore, magnesium alloy pressure-casting and magnesium alloy pressure casting machine are just becoming one of important brainstorm project in the world today, but, die casting process of magnesium alloy remains in some problems, limit the expansion of its application, because the thermal capacitance of magnesium alloy is less, latent heat of solidification is little, process of setting and traditional aluminium alloy and zinc alloy diecasting have a great difference, need higher filling velocity guarantee magnesium alloy fill type in the short period of time and solidify in press casting procedure.But because domestic magnesium alloy pressure-casting industry is delayed, magnesium alloy pressure casting machine cost is high, and a lot of enterprise is still engaged in magnesium alloy pressure-casting with common die casting machine, and common die casting machine limits due to injection speed, so the die casting produced not only quality existing problems, and very easily bring out accident.In order to solve common die casting machine due to slow the brought problem of injection speed, domestic and international die casting machine manufacturer production is for the special die casting machine of magnesium alloy, but price is more much higher than common die casting machine, and production cost is improved, very undesirable.Therefore, further improvement is necessary.
Summary of the invention
Object of the present invention aims to provide a kind of simple and reasonable, dependable performance, and it is short that the pressure time is built in supercharging, and injection speed is fast, and the injection supercharging acceleration structure of the die casting machine that machining accuracy is high, to overcome weak point of the prior art.
The injection supercharging acceleration structure of a kind of die casting machine designed by this object, comprise injection punch head, the side of injection punch head is provided with injection portion, it is characterized in that: the opposite side of injection punch head is disposed with injection oil cylinder, shot piston and pressurizing cylinder, forms booster cavity between shot piston and pressurizing cylinder; Described pressurizing cylinder is provided with a fast oil path block assembly and two fast oil path block assemblies.
Described one fast oil path block assembly comprises a fast oil circuit seat, a fast valve, fast pilot valve and a check valve; Wherein, a fast oil circuit seat to be arranged on pressurizing cylinder and to be interconnected with booster cavity, and a fast valve, a fast pilot valve and check valve are separately positioned on a fast oil circuit seat.
Described one fast oil circuit seat is also provided with a fast nitrogen cylinder, by a fast nitrogen cylinder supercharging fuel feeding during a fast oil path block component operation.
Described two fast oil path block assemblies comprise two fast valves and two fast pilot valves; Wherein, two fast valves and two fast pilot valves are separately positioned on pressurizing cylinder.
Described two fast pilot valves are NG10 latus rectum valve, and Median Function is that P hole leads to AB hole, and T hole is closed, and after commutation, Median Function is that AB hole leads to T hole, and P hole is closed.
The corresponding two fast oil path block assemblies of described pressurizing cylinder are also provided with two fast nitrogen cylinders, by two fast nitrogen cylinder supercharging fuel feeding during two fast oil path block component operation.
Described pressurizing cylinder be also provided with pressure charging valve and supercharging pilot valve, the front valve of hammer and the front pilot valve of hammer and follow hammer valve and follow hammer pilot valve; System oil oil pump feed is passed through during work before described hammer.
Described injection oil cylinder be also provided with fast-discharge valve and arrange pilot valve soon.
The present invention is by improving a fast motion speed in conjunction with the method for designing of actual production technique and control mode and two fast motions are accelerated, reach the demand meeting the thin-wall part such as plate in production Mg alloy mobile phone cover, the special die casting machine of thin-wall part that common horizontal cold-chamber die casting machine can be transformed into plate in diecast magnesium alloy mobile phone be representative, after improved die casting function realizes casting, foundry goods is full, reduces shrinkage cavity, surface-brightening, fineness is good, without current mark, reduces overlap, bubble-free and flaw, meet processing request.It has simple and reasonable, dependable performance, and it is short that the pressure time is built in supercharging, and injection speed is fast, and machining accuracy high is practical.
Accompanying drawing explanation
Fig. 1 is first embodiment of the invention structural representation.
Fig. 2 is a fast oil path block modular construction schematic diagram of first embodiment of the invention.
Fig. 3 is the fundamental diagram of first embodiment of the invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1, Fig. 2, the injection supercharging acceleration structure of this die casting machine, comprise injection punch head 1, the side of injection punch head 1 is provided with injection portion 2, the opposite side of injection punch head 1 is disposed with injection oil cylinder 3, shot piston 4 and pressurizing cylinder 5, forms booster cavity between shot piston 4 and pressurizing cylinder 5; Described pressurizing cylinder 5 is provided with a fast oil path block assembly and two fast oil path block assemblies.
One fast oil path block assembly comprises the fast valve V63 of a fast oil circuit seat 6, a fast pilot valve S63 and check valve V62; Wherein, a fast oil circuit seat 6 to be arranged on pressurizing cylinder 5 and to be interconnected with booster cavity, and a fast valve V63, a fast pilot valve S63 and check valve V62 are separately positioned on a fast oil circuit seat 6.One fast oil circuit seat 6 is also provided with a fast nitrogen cylinder A41, by a fast nitrogen cylinder A41 supercharging fuel feeding during a fast oil path block component operation.
Two fast oil path block assemblies comprise the fast pilot valve S43 of two fast valve V43 and two; Wherein, the fast pilot valve S43 of two fast valve V43 and two is separately positioned on pressurizing cylinder 5.Two fast pilot valve S43 are NG10 latus rectum valve, and Median Function is that P hole leads to AB hole, and T hole is closed, and after commutation, Median Function is that AB hole leads to T hole, and P hole is closed.The corresponding two fast oil path block assemblies of pressurizing cylinder 5 are also provided with two fast nitrogen cylinder A40, by two fast nitrogen cylinder A40 supercharging fuel feeding during two fast oil path block component operation.
In said structure, pressurizing cylinder 5 is also provided with pressure charging valve V44 and supercharging pilot valve S44, the front valve V42 of hammer and the front pilot valve S42 of hammer, follows hammer valve V45 and follow hammer pilot valve S45 and fast-discharge valve V40 and arrange pilot valve S40 soon; System oil oil pump feed is passed through during work before described hammer.
Its operation principle, see Fig. 3.
1, injection oil cylinder 3 travels forward at a slow speed: before hammer, pilot valve S42 and fast row's pilot valve S40 obtains electric, before hammer, valve V42 opens, system pressure oil P is through hammering the plunger shaft of front valve V42 to injection oil cylinder 3 into shape, fast-discharge valve V40 opens, hydraulic oil in plunger shaft is through fast-discharge valve V40 oil return box, and injection oil cylinder 3 is to stretch out at a slow speed.
2, injection oil cylinder 3 second segment travels forward at a slow speed: a fast pilot valve S63 and fast row's pilot valve S40 obtains electric, one fast valve V63 opens, in one fast nitrogen cylinder A41, hydraulic oil is through the plunger shaft of a fast valve V63 to injection oil cylinder 3, injection oil cylinder 3 is travelled forward, fast-discharge valve V40 opens, hydraulic oil in plunger shaft is through fast-discharge valve V40 oil return box, and injection oil cylinder 3 is comparatively fast to stretch out.
3, injection oil cylinder 3 travels forward at a high speed: two fast pilot valve S43 and fast row's pilot valve S40 obtain electric, two fast valve V43 open, in two fast nitrogen cylinder A40, hydraulic oil is through the plunger shaft of two fast valve V43 to injection oil cylinder 3, fast-discharge valve V40 opens, hydraulic oil in plunger shaft is through fast-discharge valve V40 oil return box, and injection oil cylinder 3 is to stretch out fast.
4, pressurizing action: two fast pilot valve S43, supercharging pilot valve S44 and fast row's pilot valve S40 obtain electric, two fast valve V43 open, in one fast nitrogen cylinder A41, hydraulic oil enters the plunger shaft of pressurizing cylinder 5, fast-discharge valve V40 opens, hydraulic oil in plunger shaft through fast-discharge valve V40 oil return box, the plunger shaft pressure increase of injection oil cylinder 3.
5, with hammer action: obtain electric with hammer pilot valve S45 and fast row's pilot valve S40, open with hammer valve V45, in two fast nitrogen cylinder A40, hydraulic oil is through following hammer valve V45 to the plunger shaft of injection oil cylinder 3, fast-discharge valve V40 opens, hydraulic oil in plunger shaft is through fast-discharge valve V40 oil return box, and injection oil cylinder 3 is comparatively fast to stretch out.
This structure, by improving a fast motion speed in conjunction with the method for designing of actual production technique and control mode and two fast motions are accelerated, reaches the demand meeting the thin-wall parts such as plate in production Mg alloy mobile phone cover.Mainly set about transformation from two broad aspect:
First is accelerate a quick acting speed, do not affect two quick acting explosive force simultaneously, its remodeling method is: add a fast motion fuel tap strengthened, improve a fast motion speed, transform the pressure that last fast motion and two fast motions are same nitrogen cylinders of release, because the pressure of a fast motion release is too much, cause two fast motion explosive force inadequate, the pressure of a fast motion release one fast nitrogen cylinder A41 after transformation, the pressure of two fast motion release two fast nitrogen cylinder A40, would not have influence on two quick acting explosive force like this;
Second is improve for two quick acting acceleration time by transforming two fast motion pilot control fuel taps, remodeling method leads to AB hole for: the pilot control direction valve two fast motions used transform Median Function as P hole, T hole is closed, after commutation, function is that AB hole leads to T hole, the 10 latus rectum direction valves that P hole is closed, when direction valve obtains electric commutation, all logical T hole, AB hole, because 10 latus rectum direction valves have two T holes, so now the through-current capacity of direction valve be before twice, thus improve the opening speed of two fast valve V43, reach the object of raising two fast motion accelerating velocity.
Above-mentioned is preferred version of the present invention, and those of ordinary skill in the art, to its simple modification or transformation, all drop within protection scope of the present invention.
Claims (8)
1. the injection supercharging acceleration structure of a die casting machine, comprise injection punch head (1), the side of injection punch head (1) is provided with injection portion (2), it is characterized in that: the opposite side of injection punch head (1) is disposed with injection oil cylinder (3), shot piston (4) and pressurizing cylinder (5), forms booster cavity between shot piston (4) and pressurizing cylinder (5); Described pressurizing cylinder (5) is provided with a fast oil path block assembly and two fast oil path block assemblies.
2. the injection supercharging acceleration structure of die casting machine according to claim 1, is characterized in that: described one fast oil path block assembly comprises a fast oil circuit seat (6), a fast valve (V63), fast pilot valve (S63) and a check valve (V62); Wherein, one fast oil circuit seat (6) is arranged on pressurizing cylinder (5) and goes up and be interconnected with booster cavity, and a fast valve (V63), a fast pilot valve (S63) and check valve (V62) are separately positioned on a fast oil circuit seat (6).
3. the injection supercharging acceleration structure of die casting machine according to claim 2, it is characterized in that: described one fast oil circuit seat (6) is also provided with a fast nitrogen cylinder (A41), by fast nitrogen cylinder (A41) supercharging fuel feeding during a fast oil path block component operation.
4. the injection supercharging acceleration structure of die casting machine according to claim 3, is characterized in that: described two fast oil path block assemblies comprise two fast valves (V43) and two fast pilot valves (S43); Wherein, two fast valves (V43) and two fast pilot valves (S43) are separately positioned on pressurizing cylinder (5).
5. the injection supercharging acceleration structure of die casting machine according to claim 4, it is characterized in that: described two fast pilot valves (S43) are NG10 latus rectum valve, and Median Function is that P hole leads to AB hole, T hole is closed, after commutation, Median Function is that AB hole leads to T hole, and P hole is closed.
6. the injection supercharging acceleration structure of die casting machine according to claim 5, it is characterized in that: the corresponding two fast oil path block assemblies of described pressurizing cylinder (5) are also provided with two fast nitrogen cylinders (A40), by two fast nitrogen cylinder (A40) supercharging fuel feeding during two fast oil path block component operation.
7. the injection supercharging acceleration structure of die casting machine according to claim 1, is characterized in that: described pressurizing cylinder (5) to be also provided with before pressure charging valve (V44) and supercharging pilot valve (S44), hammer before valve (V42) and hammer pilot valve (S42) and with hammer valve (V45) with hammering pilot valve (S45) into shape; System oil oil pump feed is passed through during work before described hammer.
8. the injection supercharging acceleration structure of die casting machine according to claim 1, is characterized in that: described injection oil cylinder (5) be also provided with fast-discharge valve (V40) and arrange pilot valve (S40) soon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510274378.5A CN105033219A (en) | 2015-05-26 | 2015-05-26 | Injection pressure-boosting and speed-increasing structure of die casting machine |
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| CN201510274378.5A CN105033219A (en) | 2015-05-26 | 2015-05-26 | Injection pressure-boosting and speed-increasing structure of die casting machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520420A (en) * | 2017-09-06 | 2017-12-29 | 佛山市盈向精密机械科技有限公司 | A kind of injection punch head device on die casting machine |
| CN112371942A (en) * | 2020-09-21 | 2021-02-19 | 蚌埠隆华压铸机有限公司 | Secondary pressurization adjustable device of die casting machine |
| CN115464120A (en) * | 2022-09-03 | 2022-12-13 | 宁波力劲科技有限公司 | Die casting machine punch speed control method and system, storage medium and intelligent terminal |
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| JPH0871725A (en) * | 1994-09-06 | 1996-03-19 | Ube Ind Ltd | Injection system for die casting machine |
| CN2829939Y (en) * | 2005-10-24 | 2006-10-25 | 深圳领威科技有限公司 | Injection appts. of die cast machine |
| JP2008105055A (en) * | 2006-10-25 | 2008-05-08 | Ube Machinery Corporation Ltd | Die casting machine and die casting method |
| JP2009107010A (en) * | 2007-11-01 | 2009-05-21 | Ube Machinery Corporation Ltd | Injection apparatus in die casting machine and control method thereof |
| CN202097382U (en) * | 2011-05-25 | 2012-01-04 | 滁州润江机械制造有限公司 | High energy-saving pressing and injecting oil cylinder oil inlet structure for die casting machine |
| CN204799918U (en) * | 2015-05-26 | 2015-11-25 | 佛山联升压铸科技有限公司 | Pressure boost speed -raising structure is penetrated to pressure of die casting machine |
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2015
- 2015-05-26 CN CN201510274378.5A patent/CN105033219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0871725A (en) * | 1994-09-06 | 1996-03-19 | Ube Ind Ltd | Injection system for die casting machine |
| CN2829939Y (en) * | 2005-10-24 | 2006-10-25 | 深圳领威科技有限公司 | Injection appts. of die cast machine |
| JP2008105055A (en) * | 2006-10-25 | 2008-05-08 | Ube Machinery Corporation Ltd | Die casting machine and die casting method |
| JP2009107010A (en) * | 2007-11-01 | 2009-05-21 | Ube Machinery Corporation Ltd | Injection apparatus in die casting machine and control method thereof |
| CN202097382U (en) * | 2011-05-25 | 2012-01-04 | 滁州润江机械制造有限公司 | High energy-saving pressing and injecting oil cylinder oil inlet structure for die casting machine |
| CN204799918U (en) * | 2015-05-26 | 2015-11-25 | 佛山联升压铸科技有限公司 | Pressure boost speed -raising structure is penetrated to pressure of die casting machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520420A (en) * | 2017-09-06 | 2017-12-29 | 佛山市盈向精密机械科技有限公司 | A kind of injection punch head device on die casting machine |
| CN112371942A (en) * | 2020-09-21 | 2021-02-19 | 蚌埠隆华压铸机有限公司 | Secondary pressurization adjustable device of die casting machine |
| CN115464120A (en) * | 2022-09-03 | 2022-12-13 | 宁波力劲科技有限公司 | Die casting machine punch speed control method and system, storage medium and intelligent terminal |
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Application publication date: 20151111 |